<div ng-controller="allDemoController" class="ciHtml">
    <div class="title">
        {{title}}
    </div>
    <div>
        <button ng-click="drawArc()">会变化的曲线</button>
        <button ng-click="drawChart()">生成一个转动的板</button>
        <button ng-click="drawTree()">生成一个可收缩的树</button>
        <button ng-click="drawCanvas()">进行画布尝试</button>
    </div>
    <div class="svgContainer">
    </div>
</div>